Thanks for the response. I've tried everything and it still does the exact opposite of what it should. I actually don't know what brand the pedal is, and it's probably 9 years old. I wouldn't have posted anything if it just didn't work, as that's what I was expecting. But the sensor works perfectly... that's what's so confusing to me. Even on the screen on the keyboard the Ped. indicator is lit up when I'm not pressing it, and goes away when I do press it. If it's just incompatible in some odd way that's fine, I just wondered if this was maybe a problem with the keyboard that's been reported before.